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Crucial BX300 480GB SSD Review

It has been a while since we’ve seen a new drive from Crucial and the major surprise about the BX300 is that it’s an entry level drive using 3D MLC NAND not the usual 2D Planer or 3D TLC NAND that drives at this end of the market tend to use.

The quoted performance figures for the 480GB BX300 are 555MB/s and 510MB/s for Sequential read/writes respectively. Incidentally those figures are the same for the 120GB and 240GB models. When tested with the ATTO benchmark, the reviewed drive produced a read figure of 564MB/s … a little better than the official figure – as was the write performance at 526MB/s.

Random read/write performance for the 480GB drive is quoted as up to 95,000 IOPS for reads with write’s up to 90,000 IOPS. That write number is the same across all three drives with the read performance of the 120GB drive quoted at up to 45,000 IOPS and the 240GB drive 84,000 IOPS.  Using our IOMeter test we couldn’t get to the top write figure, the tested drive topping out at 85,628 IOPS. Reads on the other hand did better than the official figure at 99,438 IOPS.

The drive comes with a 160TB TBW endurance figure and Crucial back the drive with a 3 year warranty which is a bit mean in these days of warranties of 5+ years that are offered these days.

We found the 480GB BX300 available on Crucial’s website for £139.19 (inc VAT) HERE

Discuss on our Facebook page, over HERE.


  • Performance.
  • Price.


  • 480GB is the largest capacity drive of the family.
  • 3 year warranty is a little mean.

Kitguru says: Crucial’s latest BX drive, aimed at the value end of the market brings very strong performance thanks to its 3D MLC NAND to the market segment at a price point that will stir up the market.

Rating: 8.0.

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